Tube cutter comprising a die having both reciprocating and oscillating motion



M. BREHM March 20, 1962 TUBE CUTTER COMPRISING A DIE HAVING BOTH RECIPROCATING AND. OSCILLATING' MOTION 4 Sheets-Sheet 1 Filed June 16, 1958 Amman 7 fihw om v INVENTOR. CI/AFL ESM 55am BY 1 O h iaw 3m saw mm p tom M. BREHM TUBE CUTTER COMPRISING A DIE HAVING-BOTH March 120, 1962 RECIPROCATING AND OSCILLATING MOTION 4 Sheets-Sheet 2 Filed June 16, 1958 JZJI BREH'M TUBE cuwmcowmsmc A DIE HAVING BOTH March 20, 1962 RECIPROCATING AND OSCILLATING MOTION 4 Sheets-Sheet 5 Filed June 16, 1958 INVENTOR. cma 55 M BBB/M H/S 4 TTOFA/EVS J IE. 8

March 20, 1962 c. M. BREHM v I 3,025,739

- TUBE CUTTER COMPRISING A DIE'HAVING BOTH RECIPROCATING AND OSCILLATING MOTION Filed June 16, 1958 4 Sheets-Sheet 4 INVENTOR. CHAEL 55 M BEEHM 315.11 120' 7 BY W w/M Ohio Filed June 16, 1958, Ser. No. 742,291 14 Claims. (Ci. 8318) This invention relates to a tube or pipe cutting machine primarily for cutting tubes having a small diameter, although not necessarily so limited, in that tubes or pipes of various diameters and various shapes may be severed.

In the past, various types of machines have been developed and used for severing tubes, usually to predetermined lengths. In some of these machines the tube has been sheared by moving two pairs of die members relative to each other in one direction. This may result in a ragged or torn edge.

To overcome this, other machines have been developed wherein a pair of dies may be actuated horizontally with respect to each other, so as to partially sever the tube, then the dies are moved vertically so as to cause the dies to move at right angles to the first movement of the dies to complete the severance of the tube. When using this method, it is usually necessary to limit the first movement so as to cut into the tube the proper amount, then arrest the movement of the dies in the horizontal direction, this followed by a vertical relative movement of the dies, or. vice versa.

An object of this invention is to provide two pairs of dies that are moved in transverse directions. This movement in transverse directions may take place in seriatim or the movements may overlap. This has been accomplished by mounting the dies in a press, wherein a cam is used to move one pair of dies in a linear direction and then, as the stroke of the press continues, to move the dies in an arcuate relative transverse path to complete the severance of the tube. The relative movement of the dies in a linear direction may continue while the dies are moved in a relative arcuate path, so as to eliminate any restrictive movement of the dies in a linear direction.

Another object of this invention is to provide a tube cutting machine wherein the tube to be severed is fed into the dies from one direction and the pieces severed from the tubes are ejected above the press bed and in a direction opposite to that of the feeding of the tube into the dies.

Another object of this invention is to provide a safety device such that in the event the cut piece is not ejected from the dies it is impossible to start the punch press for another severing operation, thereby eliminating jamming of the machine.

Other objects and advantages reside in the construction of parts, the combination thereof, the method of manufacture and the mode of operation, as will become more apparent from the following description.

Referring to the drawings, FIGURE 1 is a top plan view of the tube cutter.

FIGURE 2 is an enlarged fragmentary end view, looking substantially in the direction of the arrows 22 in FIGURE 1, with parts shown in section.

FIGURE 3 is an enlarged sectional view, taken substantially on the section line 3-3 of FIGURE 1.

FIGURE 4 is another enlarged cross sectional view,

ite States atent O taken substantially on the section line 44 of FIG- URE 1.

FIGURE 5 is an enlarged fragmentary view showing parts broken away and looking in the direction of the arrow 5 in FIGURE 1.

FIGURE 6 is a cross sectional view, taken substantially on the section line -6-6 of FIGURE 7.

FIGURE 7 is a cross sectional view, taken substantially on the section line 77 of FIGURE 6.

FIGURE 8 is a fragmentary, cross sectional view, taken substantially on the section line -88 of FIG- URE 7.

FIGURE 9 is an enlarged view of the left end of FIGURE 1.

FIGURE 10 is a side elevational view looking substantially in the direction of the arrows 10-10- in FIG- URE 9 and drawn to a larger scale than FIGURE 9.-

FIGURE 11 is a fragmentary, cross sectional view,

taken substantially on the section line 11- 11 of FIG- URE 10.

FIGURE 12 is an exploded view of a portion of the:

The tube supporting mechanism, shown primarily in' FIGURES 1 to 5 inclusive, consists of a horizontal frame 20 supported upon a post 22 and upon a bed 24. The upper end of the post 22 supports a cap member 30 supporting a stationary plate 32 having pivotally mounted thereon a plate 34 mounted for rotation upon a centrally disposed bearing 36. The plate 34 is provided with a channel having a plate 40 mounted therein held in position by means of a pair of guide strips 41. The plate 40 supports a rectangular tube 42 having mounted thereon a bracket 44 supporting a block 46 provided with a V-shaped groove in which a" tube or rod 50 is mounted. This tube or rod 50 extends the entire length from the outer extremity and has the reduced end 50a seated in a cylindrical aperture in a cylindrical member 51 clamped in the block 52 mounted in the outer end of the tube 42 that is square in cross sectional area. The end 50a of the rod 50 is smaller in diameter than the rod 50. The rod 50 has its end 50a fixedly secured in member 51. When a different size tube is to be cut, another rod approaching the inside of the tube is substituted. With the substituted rod there is another member attached thereto to be clamped in position with the substituted rod. The rod 50 and member 51 are made as a complete unit for each size tube. The rod 50 may be adjusted axially by an adjusting screw 54 threadedly engaged in the block 52.

The purpose of the adjusting screw 54 will appear more fully later.

The inner end of the rod 50 supporting the pipe 182 to be cut projects into a die assembly 100, shown in FIGURES 1 and 7, which will be described more fully later. The tube 182 to be cut surrounds the rod 50. In order to insert a tube upon the rod 50, it is necessary to withdraw the rod from the dies and to adjust it 1aterally about the pivot bearing 36. This has been accomplished by mounting the end of the tube 42 upon a bearing 60 mounted for movement in a slot 62 in the bed or plate 24. This slot 62 has a portion 62a paral- 3 lel to the rod 50, as shown in FIGURE 1, and an angularly disposed portion 62b.

The rod 50 and the parts associated therewith are locked in the full line position by means of a pin 70, normally seated in an aperture 72 in the bed or plate 24 by a lever 74 pivoted at 76 biased in a counterclockwise direction, as viewed in FIGURE 5, by a spring 78 and provided with a bifurcated end 80 seated in an annular channel 82 in the pin 70. By pressing the lever 74, so as to rotate it in a clockwise direction, as viewed in FIGURE 5, the pin 70 may be released from the aperture 72. At the same time, a handle '86, connected to a lever 88 pivoted at 90 and having pivotally connected thereto a link 92 pivotally connected to the rectangular tube 42, moves the rod and the supporting structure from the full line position shown in FIGURE 1 into the dotdash position shown in the same figure. When in the dotdash position, a tube 182 to be cut may be mounted upon the rod 50 in readiness for feeding into the die assembly, which will now be described. The rectangular tube 42 may vary with various lengths of the tube 182.

The die assemblies 100 are mounted in a stationary frame 102 provided with a removable cover 104 and attached to the base member 24 mounted upon the bed of the press. A die ring member 106 (see FIGURE 7) is mounted in a ring 109 adjustably attached to member 108 by screws 111 and two rings 108 and 10911 which are separated by a rubber member 110. Member 108 is held in position by screws 112. This permits adjustment of the die 106 and the support 109 with respect to the die'124. The cutting face of the die 106 is in the same plane as the abutting surface of member 109. By adjusting the screws 111, the face of the die 106 and the abutting surface 109 are adjusted in unison. By removing the screws'll l, the ring 109, together with the die member 106, may be removed and replaced with a die of a different diameter for cutting a different size tube. The'end of the rod 50 is provided with a cutting surface and abuts'a movably mounted rod or plunger 120 functioning as a die.

It is very important that the cutting face of the die 106 lie in the same plane as the cutting face of the rod 50. The cutting face of the rod 50 may be adjusted by tightening or loosening the screw 54 abutting member 51 fixedly attached to the rod 50. By this arrangement, it is a comparative'ly easy matter to properly align the cutting face or cutting edge of the die 106 and the cutting face or edge of the rod 50.

It is also very important that the cutting face of the die 124 lie in the same plane as the cutting face of the rod 120. The reduced end 120a of the rod 120 is fixedly seated in a tubular member 121 threadedly engaging members 123a and 12312 shown in FIGURE 12. Adjustment of the cutting face of rod 120 relative to the cutting face of the die 124 is accomplished by rotating member 121 with respect to members 123a and 123b.

The abutting endof the plunger or rod 120 is also provided with a cutting edge. A die 124 is mounted in a die supporting member 126 that is mounted in an annular die supporting member 130. The annular member 130 is mounted in a slidable member 128, best seen in FIGURE 6. The slide or slidable member 128 is provided with a channel 132 located between a pair of flanges 130a and 13017. A roller 140 is mounted upon a pin 142 seated in apertures provided therefor in the flanges 130a and 13%. The slide 128 is provided with a pair of furcations 144, only one of which has been shown, registering with a slot 146 in the cover member 104. A earn 148 overlaps one edge of the slidable member 128 and may be raised or lowered by means of an adjusting screw 150. Upon being lowered, the upper end of the cam 148 is located between the two furcations 1'44 integral with the slidable member 128.

Relative movement may be imparted to the slidable member 128 and to the circular or cylindrical die sup;

porting member to cause a relative movement between the two stationary die members. The driving mechanism for actuating the dies to perform the shearing operation will now be described.

A ram of a punch press supports a plate member 162 having fixedly attached thereto a cam 164 having a bevelled cam surface 166 engaging the cam surface 14811 of the cam 148. Plate member 162 also supports a plunger 170 mounted upon a bushing 172 surrounding a pin 174 positioned between a pair of bracket members 176, only one of which has been shown, which bracket members are fixedly attached to the plate 162, so that the plunger is driven downwardly when the ram 160 is lowered. As the ram advances downwardly, the earn 164 drives the slidable member 128 against a compres sion spring and with the slidable member the dies 120 and 1124 move to sever the tube 182 projecting into the tubular die members and surrounding the rods 50 and 120. As the ram advances downwardly, the plunger 170 engages the roller 140 to rotate annular member 130 into the cylindrical cavity therefor, to thereby cause the die members 120 and 124 to rotate through an arcuate path that is transverse to the sliding movement imparted to the dies by the cam 164.

The cam 143 is adjusted so that when the plunger 170 engages the roller 140, so as to rotate the movable dies 120 and 124, the horizontal movement of the dies, as viewed in FIGURE 6, to partially sever the tube. The depth of the cut in the sides of the tube depends on a number of factors. Usually, there is a variation in diameters and in shapes of the tubes, although they are listed as having a fixed outer diameter and a fixed inner diameter. Furthermore, the tubes may be out-of-round. That being the case, there is a certain amount of clearance between the outer die members and the outer surface of the tube to be cut, so as to provide clearance to compensate for tolerances. Likewise, the rods 50 and 120 are somewhat smaller than the internal diameter of the tube 182. The clearance between the tube and the outer and inner die members governs, in part, the depth of the severance for a given movement of the slide 12 8. There are, however, certain limitations. If the tolerances are very small and if the tube is made from a comparatively non-elastic material, the cut should not be the same depth as though a tube made from resilient material were being cut. For example, a stainless steel tube may be deformed considerably without any apparent change in the shape of the tube after it has. been finally cut, in that the stainless steel springs back into the original shape as I soon as it has been severed. In view of the variations in material and variations in tolerances, no specific for mula is applicable to tubes of various materials and tolerances. In some cases, the horizontal movement of the dies may sever the tube half way through the wall, in other cases two-thirds through and in some cases it may sever entirely through the side walls of the tube. Furthermore, in the event the movement of the slidable support 128 and the rotary movement of the dies overlap, these relative movements may influence the setting or adjustment of the cam 148.

The slope of the cam surface 148a has been so selected that the slidable member 128 moves slowly as compared with the downward stroke of the press. As soon as the plunger 170 engages the roller 140 the relative rotary movement imparted to the dies is very rapid. That being the case, it is immaterial whether the slide 128 stops or continues its movement, in that as soon as the plunger 170 engages the roller 140, the pipe or tube is snipped off almost instantly. After the tube or pipe 182 has been severed, it is necessary to eject it from the die. The ejector mechanism will now be described.

Referring to FIGURE 7, ejector member consists of a tubular member surrounding the rod 120. This tubular member has an internal diameter substantially equal to the diameter of the rod 120. A reduced end 192 of the ejector has an outer diameter equal to the outer diameter of the tube 182 and abuts the end of the tube 182. The ejector member 190 has an enlarged portion 194 provided with a flange 196. The ejector member 190 abuts and is clamped to a tubular sleeve 200 by means of a coupling unit or member 202. Member 190 cooperates with the sleeve 200 to form a piston that is mounted in a cylinder 210 mounted in member 212 that is fixedly attached to annular member 130 by a plurality of bolts 213, only one of which has been shown. By this arrangement, it can readily be seen that the ejector 190 rotates with the die members and 124. Member 212 terminates in a tubular extension 212a journalled in a bushing 214, shown in FIGURE 11, mounted in a block 216 mounted for sliding movement in a stationary frame 218, so that as the slide 128, shown in FIGURE 6, is actuated horizontally, the block 216 moves horizontally with it, as best seen in FIGURE 11. The bushing 214 is concentric and coaxially mounted with respect to the annular die supporting member 130. This bushing 214 has a flange on its outer end, not shown, associated with a clamp which permits rotary adjustment of the bushing 214 to adjust the relative position of the opening 224 to thereby adjust timing of the admission of air to the ejector cylinder 210.

As may best be seen by referring to FIGURES 7 and 11, the extension 212a is provided with an air passage 220 communicating with the cylindrical cavity in the cylinder 210. As die supporting member is rotated, an aperture 222 is moved into registry with an aperture 224 in the bushing 214. The aperture 224 registering with a cavity 226 in the block 216 communicates with an air passage 230 that is connected through a conduit 232 to a source of compressed air. As soon as the die supporting member 130 is rotated sufiiciently far to cause the aperture 222 to register with the aperture 224, air is supplied to the cylinder 210 to eject the cut oif piece of the pipe, the die members 120 and 124 having moved sufiiciently far so as to permit the severed piece to be ejected through a circular opening 108a, shown in FIGURE 6, in member 109 shown in both FIGURES 6 and 7, providing an opening through which the cut end of the tube 182 is ejected. This is accomplished by supplying air to the cylindrical cavity in the cylinder 210, so as to cause the ejector member 190 and member 200 to function as a piston, driving the ejector towards the right, as viewed in FIGURE 7. When the ejector 190 and the parts associated therewith move to the right, a series of microswitches are used to control the flow of the air to the cylinder and to the reset mechanism.

The switch 242 controls a valve 282 and a conduit 284 connected to the high pressure source of air. A conduit 286 connects the source of high pressure air to a cylinder 290 used in resetting the dies 120 and'124 positioned in the cylindrical die supporting member 130.

Referring to FIGURE 8, the piston rod 292 is connected to the die supporting member 130 to reset this member upon air being supplied to the cylinder 290. An adjusting screw 294 arrests the movement of die supporting member 130 and permits adjustment of the position of arrest, so as to align the two pairs of dies.

A rod 300 is provided with an annular channel 302 having seated in the annular channel 302 a yoke or pair of furcations 304 integral with a lever 306 pivotally mounted at 308 in member 212. Thus, when the plunger 170, shown in FIGURE 6, engages the roller to rotate die supporting member 130 and the dies mounted therein, the rod 300, which is concentric with the axis of rotation of member 130, causes the lever 306 to rotate in a counterclockwise direction, as viewed in FIGURE 8. The rod 300 is provided with an enlarged portion 310 having a lug 312 integral therewith. This lug 312 projects into the path of coupling member 202 connecting the ejector 190 to member 200, so that when the ejector operates to eject the cut piece of tubing, the rod 300 is moved to the right, as viewed in FIGURE 7, against a compression spring 314. As rod 300 moves to the right, as viewed in FIGURE 8, the lever 306 is caused to oscillate, first to open the normally closed switch 242a and later to engage the switch 242, in that the support for member 306 has been rotated so as to lie directly in line with the micro-switch 242. As soon as the rod 300 engages the micro-switch 242, air is supplied to the cylinder 290, so as to reset the dies. A cycle of operation of the tube cutter will now be described chronologically.

After each cycle the press normally stops in the up position. At this time switch 240 is open, 242a is being held closed by arm 306, and 242, a normally closed switch, is closed. Spring closed solenoid valve 282 is under control of the spring which opens 232 to exhaust 287 and ejection cylinder 210 to exhaust through ports 222a and 225. Conduit 286 and cylinder 290 are under air pressure. The control mechanism for carrying out the operation will now be described.

The tube to be cut is pushed into the dies, either manually or by a stock pusher. This is a matter of choice. As the tube is pushed into the dies, the ejector member 190 is pushed inwardly by the end of the tube. In so doing, the head of the screw 264 engages the arm 260 to rotate this arm in a clockwise direction until its rotary movement is arrested by the stop 258a. Member 258 connected to the lower end of the arm 260 engages the bell cranklever 252 to close the switch 240 which closes the circuit through the solenoid initiating the cycle of the press, as is well known to those skilled in the art.

As the press continues its down stroke, it drive the earn 164 downwardly into engagement with the cam 148. When the two cams 164 and 148 come into contact with each other, member 128 is actuated to the right, as viewed in FIGURE 6, to partially sever the tube. When member comes into contact with the roller 140, member 130 is rotated so as to rotate the cutting dies relative to each other, thereby completing the severing of the tube and continuing the rotation to the end of the press stroke when the cut tube is in alignment with the hole 108a, as best seen in FIGURE 6, ready for ejection.

When the plunger 170 comes in contact with the roller 140 and the die supporting member 130 starts to rotate the arm 306 counterclockwise, as seen in FIGURE 8, opening the switch 24201 to a press stripping solenoid, not shown, at the end of the rotational movement of the die supporting member 130, the frame, consisting of member 212 and the extension 212a, positions the air passage 222 in FIGURE 11 in alignment with the passage 224, allowing air to enter the cylinder 210 and eject the cut portion of the tube towards the right, as viewed in FIG- URE 7. The final portion of the ejection movement of members 200 and will contact the lug 312 so as to actuate the rod towards the right, a viewed in FIGURE 7, to thereby cause the outer extremity of the attached pivoted member 306 to move to the left, as shown in FIGURE 7, and to contact the switch 242 shown in FIG- URE 8 to break the circuit. When member 212a is in the full line position shown in FIGURE 11, the cylindrical cavity 210 is then connected to exhaust passages 222a, 224a, 226a and 225. With the breaking of the circuit by the switch 242, the spring controlled solenoid valve 286 will return pressure to the cylinder 290 and ejection cylinder to exhaust. By this time, the stroke will have stopped at its up position.

In order to change the length of the severed piece of tubing, the spacer 280 is changed by substituting a spacer having the proper length so that the position of the ejector is adjusted to properly space the end of the tubing to be cut.

Although the preferred embodiment of the device has been described, it will be understood that within the purview of this invention various changes may be made in the form, details, proportion and arrangement of parts, the combination thereof and mode of operation, which generally stated consist in a device capable of carrying 7 out the objects set forth, as disclosed and defined in the appended claims.

Having thus described my invention, I claim:

1. In a device for cutting tubes or pipes, the combination including two pairs of shearing dies, each of said. pairs of dies consisting of an outer die having an aperturethrough which the tube to be cut extends and a cylindrical rod-like member mounted in the tube having one end terminating in a cutting edge located in the same plane as the cutting edge of the outer die, one of said outer dies being mounted for rotation about an axis offset from said aperture through which the tube to be cut extends, the cutting edges of all of the dies being located in a substantially common plane, adjustable means for moving the two pairs of dies laterally relative to each other to pantially shear the tube, and means for rotating said rotatably mounted die through an arcuate path transverse to the relative movement of the dies to severe the tube, the portion of the tube extending through the aperture in the rotary die also traveling through an arcuate path.

2. A device for cutting tubes or pipes, the combination including two supports, two pairs of dies, one pair of dies being mounted in one of the supports and the other pair of dies being eccentrically mounted for rotation in the: other support, each of said pairs of dies consisting of an outer die having an aperture through which a tube to be severed extends, the aperture through the eccentrically mounted die being oflset from the axis of rotation, and a rod-like member mounted in the tube having one end terminating in a cutting edge located substantially in the same plane as the cutting edge of the outer die, the cutting edges of all the dies being located in a substantially common plane, adjustable means for moving one of the supports and the dies mounted therein in a linear direction relative to the other pair of dies to partially sever the tube, means :for rotating the rotatably mounted die and the portion of the tube mounted therein in a direction substantially transverse to the linear direction for severing the tube and for moving the severed end of the-tube together with the die supporting the severed end of the tube beyond the other pair of dies through an arcuate path, and means for ejecting the severed end of the tube past said other dies.

3. In -a device for cutting tubes or pipes according to claim 1, wherein one pair of dies is stationary when cutting a tube and the other pair of dies moves both laterally and in the transverse direction.

4. A device for cutting tubes or pipes according to claim 1, wherein means for ejecting the cut end of the tube ejects the cut end in a direction opposite to the direction in which the other tube is fed into the dies and wherein means responsive to one of the means for moving the one pair of dies initiates the movement of the ejecting means.

5. A device for cutting tubes or pipes, he combination including a ram, two pairs of dies, each of said pairs of dies consisting of an outer die having an aperture through which the tube to be cut extends, and a cylindrical rodlike member mounted in the tube having one end terminating in a cutting edge located substantially in the same plane as the cutting edge of the outer die, the cut ting edges of all of the dies being located in a substantially common plane, a movable support for one pair of dies, said support being movably mounted for movement in alinear direction for partially severing the tube, adjustable means for moving said movable support for said one pair of dies, said last mentioned means. including a cam mounted upon the ram, a second cam mounted upon the support for moving the movable support and the pair of dies mounted therein in a linear direction, a support mounted for rotation for eccentrically supporting one of said pairs of dies, and means for rotating the rotatably mounted support and the dies mounted therein for severing the tube in a direction transverse to the linear movement of one oi said pairs of dies.

6. A device for cutting tubes or pipes according to claim 5, wherein one of the cams is adjustably mounted with respect to the other cam to adjust the timing of the movement of the movable support in a linear direction.

7. A device for cutting tubes and pipes according to claim 5, wherein the cam mounted upon the support is adjustably mounted.

8. A device for cutting tubes and pipes according to claim 5, wherein the outer die of one of the parts of dies is mounted in a fixed support and the other pair of dies is mounted for both linear and rotary movements.

9. A device for cutting tubes and pipes according to claim 5, wherein the rod-like member of each pair of dies is mounted for axial adjustment to adjust the alignment of the cutting edges of the rod-like members with respect to the outer dies.

10. A device for cutting tubes and pipes according to claim 5, wherein the rod-like member of one of the pairs or" dies is pivotally and slidably mounted for axial movement upon a support near the end of the rod opposite the end of the rod-like member having a cutting edge so that the rod-like member may be withdrawn axially from its outer die and swung laterally to insert a tube or pipe upon said rod-like member independently of the dies.

11. Adevice for cutting tubes and pipes according to claim 2, wherein the means for ejecting the severed end of the tube includes a cylinder, a hollow piston mounted in the cylinder and surrounding the rod-like member supporting the severed end of the tube, said hollow piston including a portion abutting the severed end of the tube, said portion being confined to the external diameter of the tube, a source of fluid under pressure, and means for supplying fluid to the cylinder to actuate the piston towards the cutting dies to eject the severed end of the tube.

12. A device for cutting tubes and pipes according to claim 2, wherein the means for ejecting the severed end of the tube includes a cylinder, a hollow piston mounted in the cylinder and surrounding the rod-like member supporting the severed end of the tube, said hollow piston including a portion abutting the severed end of the tube, said portion being confined to the external diameter of the tube, a source of fluid under pressure, means for supplying fluid to the cylinder to actuate the piston towards the cutting dies to eject the severed end of the tube, the tube upon being inserted into the dies drives the ejector means to close a switch initiating another cycle.

'13. A device for cutting tubes and pipes according to claim 2., wherein the means for ejecting the severed end of the tube includes a cylinder, a hollow piston mounted 'in the cylinder and surrounding the rod-like member supporting the severed end of the tube, said hollow piston including a portion abutting the severed end of the tube, said portion being confined to the external diameter of the tube, a source of fluid under pressure, means for supplying fluid to the cylinder to actuate the piston towards the cutting dies to eject, the severed end of the tube, and means for resetting the dies in readiness for again severing the tubes fed into the dies.

14. A device for cutting tubes or pipes, the combination including two supports, two pairs of dies, one pair of dies being mounted in one of the supports and the other pair of dies being eccentrically mounted for rotation in the other support, each of said pairs of dies consisting of an outer die having an aperture through which a tube to be severed extends, the aperture through the eccentrically mounted die being ofiset from the axis of rotation of the die and a rod-like member mounted in the tube having one end terminating in a cutting edge located substantially in the same plane as the cutting edge of the outer die, the cutting edges of all the dies being located in a substantially common plane, adjustable means for mov-' ing one of the supports and the dies mounted therein in a linear direction relative tov the other pair of dies to partially sever the tube, means for rotating the rotatably mounted die in a direction substantially transverse to the linear direction for severing the tube and for moving the severed end of the tube through an arcuate path together with the die supporting the severed end of the tube beyond the other pair of dies, means for ejecting the severed end of the tube past said other dies, said ejecting means including a tubular member having outer and inner diameters substantially equal to the inner and outer diameters of the tube, said tubular member surrounding the rod-like member supporting the severed end of the tube, and means for actuating the tubular member axially upon the rod-like member to eject the severed end of the tube.

References Cited in the file of this patent UNITED STATES PATENTS Happel Jan. 29, Williams May 13, Krueger July 6, Cibs July 30, Friedman Aug. 8, Brehm Feb. 10, 

